Description: Made with high quality stainless steel. Countersunk plug with a hex drive for closing the end of a pipe or fitting. Male threads for connecting to female threaded pipes. Highly durable stainless steel hex pipe plugs provide a superior corrosion-resistant fastening solution, have low magnetic permeability, are ductile at high temperatures, and have high electrical and thermal conductivity. Can be connected to copper, brass, plastic, aluminum, and welded steel. Specification: Material: Stainless Steel Standard: DIN 906 Style: Threaded Size: 1/2'' - Thread Outer Diameter: 20mm; Height: 15mm; The inner six angles to the side: 10mm Package Includes: 4 Pieces Hex Nuts